We say:

Roland's CM-30 is a great practice amp for instrumentalists and vocalists alike. Feature a range of connectivity, including XLR, jack and auxiliary inputs, it offers 30w of output and can be used productively as a bedroom or classroom amp, or a stage monitor too.  

Roland say: 

Versatile and portable, the new CM-30 CUBE Monitor delivers 30 watts of audio punch through a rugged, high-quality 6.5" coaxial 2-way speaker with stereo preamp. The CM-30 is ideal for home-studio and wide-ranging monitoring applications, but it can be used for live monitoring onstage as well.